Dual Batteries with shut off

If you want the batteries to be disconnected from load, same. If you want them to be disconnected from the load AND each other, different.

get a marine 1/2/off/both rotary switch.
bumpy

Bumpyroad wrote:
get a marine 1/2/off/both rotary switch.
bumpy

x2

2oldman wrote:
If you want the batteries to be disconnected from load, same. If you want them to be disconnected from the load AND each other, different.

Not necessarily.

It depends on whether it will be 2 12V's in parallel OR 2 6V's in series.

But the basic battery disconnect switch is put in one of the main cables LEAVING the battery array. Makes little difference whether you disc. the + or - main cable.

frisbeekev wrote:
I want to add a battery disconnect switch. Is the hook up for this different with dual batteries as opposed to 1 battery, or does it hook up the same?

Your choice - pick whatever suits you best. ;)

Blue Sea m-Series Battery Switches

Check out my how to video on this exact same thing, 2 6v batts.

https://www.youtube.com/watch?v=ul4w7XEy4k8&t=4s

Yep, get a marine 2 battery switch. Should have a wiring diagram in the package.

Allows you to run on 1, 2 or both or disconnect both.

Edit:
This assumes 2 - 12V batteries.

If you are going 2 - 6v batteries, you want a simple on-off switch to disconnect the whole bank from the 12v system or you may wind up feeding 6v to the RV 12v system. You could put a disconnect between the 6v batteries but it's not typically done and you would have to be careful not to accidentally feed 6v to the RV 12v system.